Collapsible mushroom anchor



Feb. 28, 1950 L. R. GOLDING v I 2,499,138

COLLAPSIBLE MUSHROOM ANCHOR.

Filed Nov. 15, 1947 I /C1 4 v V j" j 01? 602W 7 Patented Feb. 28, 1950 prune!) STATESPAT OFFICE 2,499,13 OOLLAPSIBLE MUsHnoo ANCHOR Leo R. Golding, ioston, Mass Application November 13, 1947; Serial No. 785,665

The object of the present invention is to furn'ish amushroom anchor so constructed that it can be folded and collapsed into a comparatively small compass for stowage on the deck of a vessel or'in a locker or compartment below deck.

Mushroom anchors heretofore used in practice have been made with the head and stock or shank in rigid union. The heads of such anchors are disheddisks or shallow circular cups of substantially large diameter, wherefore the "anchors are awkward to stow and occupy much space when stowed on min a vessel. Large anchors of this type present nearly insurmountable difficulties. Yet the holding power in the ground of such anchors is so 'rnuch greater than that of anchors of other types as to make their use far preferable.

The object and accomplishment of this invention has been to make it possible to stow mushroom anchors in smaller spaces than heretofore and so to increase the possibilities and extent of the use of this type of anchor. The principles of the invention and presently preferred means of carrying it into effect are described in the following-specification with reference to the accompanying drawings.

In the drawings,

Fig.- 1 is a side elevation, partly in section, on line i--l of Fig. 3, of a mushroom anchor embodying this invention, represented with the stock partly broken away;

Fig. 2 is a plan view of the head of the anchor as seen from beneath Fig. 1;

Figs. 3 and 4 are fragmentary sectional views taken on lines 3-3 and 44. respectively, of Fig. 1;

Fig. 5 is a side view of the anchor with the head collapsed and locked in collapsed position;

Fig. 6, is a fragmentary view partly in elevation and partly in section showing the halves of the divided head in an intermediate position between fully extended and fully collapsed.

Like reference characters designate the same parts wherever they occur in all the figures.

The stock of the mushroom anchor here shown is designated a. and the mushroom head is indi cated as composed of two semi-circular concavo convex members b and b which, when abutted together on a diametral plane, form collectively a circular dished disk or shallow spherical cup. In other words, the head is such a disk or cup divided on a diameter into two parts 1: and b Notches are formed in both of the halves at the mid length of the diameter to receive and fit closely about the foot end of the stock. A pair of lugs 0 rise from the inner face of the head 6 Claims; (01. 114-208) section b at the sides of the notch therein embracing the stock; and similar lugs c are symmetrically arranged with respect to the head section b Corresponding lugs-c and c on each side of the stockabut together on the plane of he diametral divisionbetweenthe sections when the head is extended in the position shown by Figs. 1-4. A pivot (1 passes. through the lugs c and the stock, occupying an inclined slot e in the stock; and a pivot 11 passes through the lugs 0 and a slot e in the stock at. These pivots are parallel to the cleavage plane betweenthe sections of the head and to each other, and areperpendicular to the length dimension of the stock. The rim of the headlies in a plane perpendicular to the'length of the stock and parallel to the pivots d and d 1 1 The pivots d d and slots e e are located within the rim of the head, and the slots are inclined outwardly away from the center line and foot end of the stock, being approximately equidistant fromthe chord joining'the'ends of the arc ofcleavage between the halves of the head. Thisarrangement enables the halves of the head to move apart while 'swingingabout the fulcrum afiorded by their contacting corners, in the course of initial collapsing movement, as illustrated by Fig. 6; the pivots then traveling upward and outward in the slots.

To hold the head rigidly in extended position, tie rods g are provided which are coupled to the sections of the head by notched lugs f and f Two such tie rods are here shown, but there may be one only, or more than two, suitably disposed to serve the purpose. One end of each tie rod is connected in one of the notched lugs f by means of a pivot h, and the other end is adapted to swing into and out of the notch. in the cooperating lug f and to be secured therein by a nut k threaded on the free end of the rod outside of the lug f. The pivot it occupies an elongated slot i in the tie rod, such slot allowing the rod to be swung to a reversed position, where it extends toward the rim of the head as shown in Fig. 5, and to be locked in that position by movement endwise so that its extremity will extend farther from the pivot than the distance of the bottom of the notch from the pivot.

Holes 1 are provided near the rim of the head to enable a hook or grapple to be engaged with the head for assistance in handling the anchor when hoisting it aboard the vessel. Other holes m are provided near the center of the head to permit drainage of water and mud when the anchor has been hoisted from the bottom ground above the surface of the harbor.

Two of the holes I are located at opposite ends of a diameter perpendicular to the cleavage plane and a transverse hole is provided in the stock in a position to register with the last mentioned holes I when the head is collapsed. A bolt n may then be passed through the registering holes, as shown in Fig. 5, and secured by a toggle or cotter in its protruding headless end.

The anchor, when so collapsed, may be stowed in chocks on the deck of a boat or in a locker so that it occupies a minimum of space. It can be made ready quickly for use by removing the hold= I ing bolt n, swinging the parts b and b into the open position, swinging the tie rods 9 about their pivots h into the notched lugs f and setting up the nuts It.

What I claim is:

1. An anchor comprising a stock, a head of spheroidal formation connected to the stock. said head being formed of two sections adapted to abiit together on a n ianietral cleavage plane, each section having lugs embracing. the foot portion of the stock at; the opposite side of said cleavage pi'ahe from the lugs of the other section, and pivots extending through the lugsof the respective sections and the stock, arranged to permit swinging of the sections between their abutting relationship and positions alongside the stock.

2. anchor as set forth in claim 1,. in which the ivots areiocated between the bottom of the head and the plane or its rim and the: stock is provided with slots through which the pivots ex"- tend, said slots b-in'g inclinedoutwardly away rromthe-footof the stock and from the cleavage plane.

3'. anchor as set forth in claim 2, combined with legs on theo'uter side ofthe head sections and a tie rod connected with lugs of both sections extending across the cleavage plane for securing the sections in their abutting extended relationship; the tie rod being diseng-agea'ble from one of said lugs to permit displacement of the sections into their collapsed positions alongside the Smoke 4. An anchor as set forth in claim 3, combined with releasable means for securing the head sections in their collapsed position.

5. An anchor comprising a stock, a head of shallow cup formation comprised by two sections abutting together on a diametral cleavage plane, said sections being independently pivoted to the foot portion of the stock on axes located at opposite sides of such cleavage plane and being rotatable about said axes between an extended position in abutting relationship and collapsed positions alongside the stock, lugs united to the outer surfaces of the sections on opposite sides of the cleavage plane, and a tie rod pivoted to one of said IugseXtending across the cleavage plane and detachably connected with the other lug.

, 6.- An anchorcomprising a stock, a head of shallow cup formation comprised by two sections abutting together on a diametral cleavage plane, said sections being independently pivoted to the foot portion of the stock on axes located at oppositesides of such cleavage plane and being rotatable aboutsaid axes between an extended position inabutting relationship and collapsed positions alongside the stock, disconnectible means for holding the sections rigidly in their extended, abutting relationship, the sections having holes near their rim located substantially at opposite ends of a diameter perpendicular to the cleavage plane, the stock having a; transverse hole located to register with the before named holes when the head sections are incollapsed position, and a bolt adapted to be located in said registering holes for securing the sections in collapsed'positioni LEO R. GOLDING.

REFERENCES CITED The following references are of recordin the file of this patent:

UNITED STATES PATENTS Number Name Date 847,320 Crane i l Mar; 19, 1,101,718 Terri'en i l June 30, 1914 

